The HED-W is a specialty recirculating chiller designed for direct temperature control of chemical liquids in the 300 to 750 watt capacity range. The device consists of a controller and separate fluororesin heat exchanger. A refrigerant-free, thermoelectric peltier element controls temperature with precision of ±0.1°C. Extracted heat can be removed via facility water connection. This model configures the controller and heat exchanger in one part number.